Joist and girder hanger.



J. FREDRIGKSON.

JOIST AND GIBDER HANGER. APPLIoATIox rrLnn slm'. 1a, 1911.

1,019,778. Patented Mgr.12,1912.

OOLUIAIIA PLANOGIAPH e0.. vlAsMlNmoN. D. c.

UNITED STATES PATENT crimen.

JOHN FREDRICKSON, OF CHICAGO, ILLINOIS.

JOIST AND GIRDER HANGER.

To all whom it may concern:

Be it known that I, JOHN FREDRICKSON, a citizen of the United States,residing at the city of Chicago, county of Cook, and State of Illinois,have invented certain new and useful Improvements in Joist and GirderHangers, of which the following is a specification.

My invention relates to improvements in joist and girder hangers adaptedfor use in building construction, the object being to provide a simpleand efficient formation of hanger parts whereby a maximum degree ofstrength with a minimum weight of metal is provided in the hanger.

The invention consists in the combinations and arrangements of partshereinafter described and claimed, in which.

The invention will be best understood by reference to the accompanyingdrawing.

Figure 1 is a side elevation of a joist and girder hanger embodying myinvention, Fig. 2 is an end elevation of the hanger, and, Fig. f3 is ahorizontal section taken on line fc-w of Fig. 2.

The preferred form of construction as illustrated in the accompanyingdrawing comprises a post 1, a girder 2 and a pair of joists 3. Thesemembers are temporarily secured togetherl by means of nails 4 asindicated by dotted lines in the several figures. The girder 2 issupported by means of a metallic hanger 5 having a flat seat 6 on whichthe end of the girder rests, as illustrated in Fig. 1. Depending fromone edge of the seat 6 is a perforated lug 7 which may be secured to thepost 1 by means of a lag screw 8 or any other well known securingdevice. A pair of arms 9 formed integral with the seat 6 projectupwardly from the ends thereof in such a manner as to embrace oppositesides of the girder 2, this feature being clearly illustrated in Fig. 2.These arms are curved in such a manner as to project beyond the end ofthe girder 2 and to embrace opposite sides of the post 1. The free endsof the arms 5 are thus brought into a vertical plane which is offsetfrom the plane of the seat 6 as will be apparent by reference to Fig. 1.Bolt-holes 10 are provided in the free ends of the arms 5, and theportions 11 of said vfree ends through which Specification of LettersPatent.

Application led September 13, 1911.

Patented Mar. 12, 1912.

Serial No. 649,187.

said bolt-holes are passed are raised, as clearly drawn in Fig. 3.

From t-he construction thus far described it is evident that a rigidsupporting means is provided for the girder 2, especially after anelongated bolt 12 is passed through the bolt holes 10. In order tosupport joists 3 a pair of substantiall U-shaped metallic hangers 1B areprovi ed. Each of these hangers is provided with a flat seat 14 on whicha oist 3 rests and with side fianges 15 to prevent rocking of the joist.The upper ends of the flanges 15 are connected together by means of atie-head 16 as clearly illustrated in Figs. 1 and 2. Depending from eachseat 14 is a joint-lug 17 which is provided with a depressed portion 18fitting over the raised portion 11 of each free end 5 as illustrated inFig. 3. In this manner the joistl hangers 13 are maintained in avertical position after the locking bolt 12 has been positioned as shownin Fig. 2.

A joist and girder' hanger as above set forth is useful in buildingconstruction and facilitates the connection of parts similar to thoseillustrated in the accompanying drawing.

Vhile I have illustrated and described the preferred construction forcarrying my invention into effect, the same is capable of variation ormodification without departing from the spirit of the invention. Itherefore do not wish to be limited to the exact details of constructionset forth but desire to avail myself of such variations andmodifications as fall within the scope of the appended claim.

Having described my invention what I claim as new and desire' to secureby Letters Patent is:

A metallic girder hanger comprising a flat elongated seat, a perforatedlug projecting downward from one edge of said seat, arms disposed atright angles to said seat and projecting upwardly from the ends thereof,said arms having a compound curve such that the free ends thereof lie ina vertical plane offsetfrom said seat, there being bolt-holes in saidfree ends, joist hangers adapted to be bolted to said free ends of saidarms, each joist hanger comprising a seat and flanges extending upwardlytherefrom, and :L joint-lug extending In testimony whereof I have signedmy downwardly from said last named seat and name to this specification1n the presence oi having a bolt-hole for registration with a twosubscribing witnesses.

bolt-hole in one of said free ends, there be- JOHN FREDRICKSON. ingregistering raised and depressed lpor- Vtnesses:

tions on said free ends and joint-lugs, sub- HELEN F. LILLIS,

stantially as described. JOSHUA R. H. Porre.

Copies of this patent may be obtained for ve eeh, hy addressing theCommissioner of Patents, Washingmn.- I?. Q,

